Starting System Logging Service...
         Starting getty on tty2-tty6 if dbus and logind are not available...
         Starting Permit User Sessions...
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timers.
[  OK  ] Started System Logging Service.
[  OK  ] Found device /dev/ttyS0.
[  OK  ] Started Permit User Sessions.
[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Started getty on tty2-tty6 if dbus and logind are not available.
[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
[  OK  ] Started Getty on tty6.
[  OK  ] Started Getty on tty5.
[  OK  ] Started Getty on tty4.
[  OK  ] Started Getty on tty3.
[  OK  ] Started Getty on tty2.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts.
2020/09/09 08:02:57 parsed 1 programs
2020/09/09 08:02:57 executed programs: 0
syzkaller login: [   65.724168][   T28] audit: type=1400 audit(1599638577.601:8): avc:  denied  { execmem } for  pid=6858 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   66.888755][ T6859] IPVS: ftp: loaded support on port[0] = 21
[   67.029799][ T6859] chnl_net:caif_netlink_parms(): no params data found
[   67.081557][ T6859] bridge0: port 1(bridge_slave_0) entered blocking state
[   67.089413][ T6859] bridge0: port 1(bridge_slave_0) entered disabled state
[   67.097826][ T6859] device bridge_slave_0 entered promiscuous mode
[   67.108141][ T6859] bridge0: port 2(bridge_slave_1) entered blocking state
[   67.115519][ T6859] bridge0: port 2(bridge_slave_1) entered disabled state
[   67.123123][ T6859] device bridge_slave_1 entered promiscuous mode
[   67.143422][ T6859] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   67.155167][ T6859] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   67.181524][ T6859] team0: Port device team_slave_0 added
[   67.189049][ T6859] team0: Port device team_slave_1 added
[   67.207236][ T6859] batman_adv: batadv0: Adding interface: batadv_slave_0
[   67.214379][ T6859] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[   67.240709][ T6859] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   67.254682][ T6859] batman_adv: batadv0: Adding interface: batadv_slave_1
[   67.261618][ T6859] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[   67.288058][ T6859] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   67.323452][ T6859] device hsr_slave_0 entered promiscuous mode
[   67.331420][ T6859] device hsr_slave_1 entered promiscuous mode
[   67.453210][ T6859] netdevsim netdevsim0 netdevsim0: renamed from eth0
[   67.462957][ T6859] netdevsim netdevsim0 netdevsim1: renamed from eth1
[   67.474135][ T6859] netdevsim netdevsim0 netdevsim2: renamed from eth2
[   67.484793][ T6859] netdevsim netdevsim0 netdevsim3: renamed from eth3
[   67.509193][ T6859] bridge0: port 2(bridge_slave_1) entered blocking state
[   67.516396][ T6859] bridge0: port 2(bridge_slave_1) entered forwarding state
[   67.524088][ T6859] bridge0: port 1(bridge_slave_0) entered blocking state
[   67.531145][ T6859] bridge0: port 1(bridge_slave_0) entered forwarding state
[   67.578834][ T6859] 8021q: adding VLAN 0 to HW filter on device bond0
[   67.591989][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   67.602261][   T17] bridge0: port 1(bridge_slave_0) entered disabled state
[   67.610595][   T17] bridge0: port 2(bridge_slave_1) entered disabled state
[   67.618956][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[   67.632664][ T6859] 8021q: adding VLAN 0 to HW filter on device team0
[   67.646154][ T6743] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   67.655231][ T6743] bridge0: port 1(bridge_slave_0) entered blocking state
[   67.662281][ T6743] bridge0: port 1(bridge_slave_0) entered forwarding state
[   67.687362][ T2742] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   67.696924][ T2742] bridge0: port 2(bridge_slave_1) entered blocking state
[   67.704020][ T2742] bridge0: port 2(bridge_slave_1) entered forwarding state
[   67.712934][ T2742] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[   67.723152][ T2742] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[   67.739465][ T6859] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[   67.750118][ T6859] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[   67.762988][    T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[   67.771620][    T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[   67.780541][    T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[   67.790301][    T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[   67.812102][ T6859] 8021q: adding VLAN 0 to HW filter on device batadv0
[   67.820849][ T7079] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[   67.828459][ T7079] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[   67.847501][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[   67.867388][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[   67.876035][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[   67.883578][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[   67.895557][ T6859] device veth0_vlan entered promiscuous mode
[   67.907376][ T6859] device veth1_vlan entered promiscuous mode
[   67.929248][ T7079] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[   67.937689][ T7079] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[   67.946477][ T7079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[   67.957079][ T6859] device veth0_macvtap entered promiscuous mode
[   67.968426][ T6859] device veth1_macvtap entered promiscuous mode
[   67.987492][ T6859] batman_adv: batadv0: Interface activated: batadv_slave_0
[   67.995256][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[   68.005269][   T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[   68.016410][ T6859] batman_adv: batadv0: Interface activated: batadv_slave_1
[   68.024524][    T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[   68.033009][    T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[   68.046308][ T6859] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   68.055166][ T6859] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   68.063935][ T6859] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   68.072616][ T6859] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   68.143653][ T7081] mmap: syz-executor.0 (7081) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.
[   68.223051][ T7081] ==================================================================
[   68.223109][ T7081] BUG: KASAN: global-out-of-bounds in fbcon_resize+0x781/0x810
[   68.223121][ T7081] Read of size 4 at addr ffffffff8896c2d8 by task syz-executor.0/7081
[   68.223124][ T7081] 
[   68.223137][ T7081] CPU: 1 PID: 7081 Comm: syz-executor.0 Not tainted 5.9.0-rc4-syzkaller #0
[   68.223145][ T7081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   68.223150][ T7081] Call Trace:
[   68.223165][ T7081]  dump_stack+0x198/0x1fd
[   68.223180][ T7081]  ? fbcon_resize+0x781/0x810
[   68.223192][ T7081]  ? fbcon_resize+0x781/0x810
[   68.223216][ T7081]  print_address_description.constprop.0.cold+0x5/0x497
[   68.223233][ T7081]  ? fbcon_resize+0x781/0x810
[   68.223248][ T7081]  ? lockdep_hardirqs_off+0x96/0xd0
[   68.223263][ T7081]  ? vprintk_func+0x97/0x1a6
[   68.223279][ T7081]  ? fbcon_resize+0x781/0x810
[   68.223291][ T7081]  ? fbcon_resize+0x781/0x810
[   68.223303][ T7081]  kasan_report.cold+0x1f/0x37
[   68.223318][ T7081]  ? fbcon_resize+0x781/0x810
[   68.223334][ T7081]  fbcon_resize+0x781/0x810
[   68.223354][ T7081]  ? display_to_var+0x7b0/0x7b0
[   68.223386][ T7081]  ? vc_do_resize+0x2f6/0x1150
[   68.223397][ T7081]  ? __kmalloc+0x1c7/0x310
[   68.223413][ T7081]  ? display_to_var+0x7b0/0x7b0
[   68.223427][ T7081]  vc_do_resize+0x535/0x1150
[   68.223459][ T7081]  ? lock_downgrade+0x830/0x830
[   68.223472][ T7081]  ? check_preemption_disabled+0x50/0x130
[   68.223484][ T7081]  ? store_bind+0x6a0/0x6a0
[   68.223499][ T7081]  ? _raw_spin_unlock_irqrestore+0x6f/0x90
[   68.223514][ T7081]  ? _raw_spin_unlock_irqrestore+0x6f/0x90
[   68.223535][ T7081]  vt_ioctl+0x11d2/0x2cc0
[   68.223550][ T7081]  ? lock_release+0x1/0x8f0
[   68.223563][ T7081]  ? vt_waitactive+0x350/0x350
[   68.223576][ T7081]  ? check_preemption_disabled+0x50/0x130
[   68.223587][ T7081]  ? kfree+0x221/0x2b0
[   68.223603][ T7081]  ? tomoyo_path_number_perm+0x415/0x4d0
[   68.223617][ T7081]  ? lockdep_hardirqs_on+0x53/0x100
[   68.223637][ T7081]  ? tomoyo_path_number_perm+0x244/0x4d0
[   68.223654][ T7081]  ? tomoyo_execute_permission+0x470/0x470
[   68.223670][ T7081]  ? lock_is_held_type+0xbb/0xf0
[   68.223685][ T7081]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   68.223701][ T7081]  ? tty_jobctrl_ioctl+0x4d/0x1010
[   68.223712][ T7081]  ? vt_waitactive+0x350/0x350
[   68.223730][ T7081]  tty_ioctl+0x1019/0x15f0
[   68.223754][ T7081]  ? tty_fasync+0x390/0x390
[   68.223768][ T7081]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   68.223785][ T7081]  ? do_vfs_ioctl+0x27d/0x1090
[   68.223800][ T7081]  ? generic_block_fiemap+0x60/0x60
[   68.223816][ T7081]  ? selinux_inode_getsecctx+0x90/0x90
[   68.223828][ T7081]  ? _copy_to_user+0x126/0x160
[   68.223856][ T7081]  ? __fget_files+0x294/0x400
[   68.223877][ T7081]  ? bpf_lsm_file_ioctl+0x5/0x10
[   68.223890][ T7081]  ? tty_fasync+0x390/0x390
[   68.223907][ T7081]  __x64_sys_ioctl+0x193/0x200
[   68.223925][ T7081]  do_syscall_64+0x2d/0x70
[   68.223940][ T7081]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   68.223951][ T7081] RIP: 0033:0x45d5b9
[   68.223966][ T7081] Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   68.223974][ T7081] RSP: 002b:00007f7e8d492c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   68.223988][ T7081] RAX: ffffffffffffffda RBX: 000000000001d000 RCX: 000000000045d5b9
[   68.223996][ T7081] RDX: 0000000020000000 RSI: 0000000000005609 RDI: 0000000000000006
[   68.224005][ T7081] RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
[   68.224013][ T7081] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
[   68.224022][ T7081] R13: 00007ffdad905aef R14: 00007f7e8d4939c0 R15: 000000000118cf4c
[   68.224045][ T7081] 
[   68.224050][ T7081] The buggy address belongs to the variable:
[   68.224063][ T7081]  font_vga_8x16+0x58/0x60
[   68.224067][ T7081] 
[   68.224071][ T7081] Memory state around the buggy address:
[   68.224082][ T7081]  ffffffff8896c180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   68.224092][ T7081]  ffffffff8896c200: 00 00 00 00 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
[   68.224102][ T7081] >ffffffff8896c280: 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00
[   68.224108][ T7081]                                                     ^
[   68.224117][ T7081]  ffffffff8896c300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   68.224126][ T7081]  ffffffff8896c380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   68.224132][ T7081] ==================================================================
[   68.224136][ T7081] Disabling lock debugging due to kernel taint
[   68.225610][ T7081] Kernel panic - not syncing: panic_on_warn set ...
[   68.225625][ T7081] CPU: 1 PID: 7081 Comm: syz-executor.0 Tainted: G    B             5.9.0-rc4-syzkaller #0
[   68.225631][ T7081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   68.225634][ T7081] Call Trace:
[   68.225648][ T7081]  dump_stack+0x198/0x1fd
[   68.225662][ T7081]  ? fbcon_resize+0x720/0x810
[   68.225673][ T7081]  panic+0x347/0x7c0
[   68.225693][ T7081]  ? __warn_printk+0xf3/0xf3
[   68.225708][ T7081]  ? preempt_schedule_common+0x59/0xc0
[   68.225717][ T7081]  ? fbcon_resize+0x781/0x810
[   68.225730][ T7081]  ? preempt_schedule_thunk+0x16/0x18
[   68.225743][ T7081]  ? trace_hardirqs_on+0x55/0x220
[   68.225754][ T7081]  ? fbcon_resize+0x781/0x810
[   68.225764][ T7081]  ? fbcon_resize+0x781/0x810
[   68.225775][ T7081]  end_report+0x4d/0x53
[   68.225786][ T7081]  kasan_report.cold+0xd/0x37
[   68.225798][ T7081]  ? fbcon_resize+0x781/0x810
[   68.225809][ T7081]  fbcon_resize+0x781/0x810
[   68.225823][ T7081]  ? display_to_var+0x7b0/0x7b0
[   68.225839][ T7081]  ? vc_do_resize+0x2f6/0x1150
[   68.225848][ T7081]  ? __kmalloc+0x1c7/0x310
[   68.225860][ T7081]  ? display_to_var+0x7b0/0x7b0
[   68.225871][ T7081]  vc_do_resize+0x535/0x1150
[   68.225891][ T7081]  ? lock_downgrade+0x830/0x830
[   68.225901][ T7081]  ? check_preemption_disabled+0x50/0x130
[   68.225911][ T7081]  ? store_bind+0x6a0/0x6a0
[   68.225922][ T7081]  ? _raw_spin_unlock_irqrestore+0x6f/0x90
[   68.225934][ T7081]  ? _raw_spin_unlock_irqrestore+0x6f/0x90
[   68.225947][ T7081]  vt_ioctl+0x11d2/0x2cc0
[   68.225958][ T7081]  ? lock_release+0x1/0x8f0
[   68.225974][ T7081]  ? vt_waitactive+0x350/0x350
[   68.225984][ T7081]  ? check_preemption_disabled+0x50/0x130
[   68.225993][ T7081]  ? kfree+0x221/0x2b0
[   68.226006][ T7081]  ? tomoyo_path_number_perm+0x415/0x4d0
[   68.226017][ T7081]  ? lockdep_hardirqs_on+0x53/0x100
[   68.226031][ T7081]  ? tomoyo_path_number_perm+0x244/0x4d0
[   68.226045][ T7081]  ? tomoyo_execute_permission+0x470/0x470
[   68.226058][ T7081]  ? lock_is_held_type+0xbb/0xf0
[   68.226070][ T7081]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   68.226083][ T7081]  ? tty_jobctrl_ioctl+0x4d/0x1010
[   68.226093][ T7081]  ? vt_waitactive+0x350/0x350
[   68.226105][ T7081]  tty_ioctl+0x1019/0x15f0
[   68.226119][ T7081]  ? tty_fasync+0x390/0x390
[   68.226130][ T7081]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   68.226142][ T7081]  ? do_vfs_ioctl+0x27d/0x1090
[   68.226154][ T7081]  ? generic_block_fiemap+0x60/0x60
[   68.226167][ T7081]  ? selinux_inode_getsecctx+0x90/0x90
[   68.226176][ T7081]  ? _copy_to_user+0x126/0x160
[   68.226192][ T7081]  ? __fget_files+0x294/0x400
[   68.226207][ T7081]  ? bpf_lsm_file_ioctl+0x5/0x10
[   68.226224][ T7081]  ? tty_fasync+0x390/0x390
[   68.226241][ T7081]  __x64_sys_ioctl+0x193/0x200
[   68.226254][ T7081]  do_syscall_64+0x2d/0x70
[   68.226265][ T7081]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   68.226274][ T7081] RIP: 0033:0x45d5b9
[   68.226286][ T7081] Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[   68.226292][ T7081] RSP: 002b:00007f7e8d492c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   68.226303][ T7081] RAX: ffffffffffffffda RBX: 000000000001d000 RCX: 000000000045d5b9
[   68.226310][ T7081] RDX: 0000000020000000 RSI: 0000000000005609 RDI: 0000000000000006
[   68.226317][ T7081] RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
[   68.226323][ T7081] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
[   68.226331][ T7081] R13: 00007ffdad905aef R14: 00007f7e8d4939c0 R15: 000000000118cf4c
[   68.227467][ T7081] Kernel Offset: disabled
[   69.015459][ T7081] Rebooting in 86400 seconds..